Unexpected control character found

try {
      $secretKey = 'hayderZainCash';
      $headers = apache_request_headers();
      $token = $headers['Authorization'];
      $credintials = JWT::decode($token, $secretKey, array('HS256'));
      echo $credintials;
    } catch (Exception $e) {
      echo 'error ' . $e->getMessage();
    }

preg_match('/Bearers(S+)/', $headers['Authorization'], $matches);
$token = $matches[0];

try
{
    $secretKey = 'hayderZainCash';
    $headers = apache_request_headers();
    preg_match('/Bearers(S+)/', $headers['Authorization'], $matches);
    $credintials = JWT::decode($matches[0], $secretKey, array('HS256'));

    print_r($credintials);
}
catch( Exception $e )
{
    echo 'error ' . $e->getMessage();
}